4473721 has 8 divisors (see below), whose sum is σ = 5382080. Its totient is φ = 3632688.

The previous prime is 4473713. The next prime is 4473727. The reversal of 4473721 is 1273744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4473721 - 2³ = 4473713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4473721.

It is not an unprimeable number, because it can be changed into a prime (4473727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16686 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (672760).

Almost surely, 2^4473721 is an apocalyptic number.

It is an amenable number.

4473721 is a deficient number, since it is larger than the sum of its proper divisors (908359).

4473721 is a wasteful number, since it uses less digits than its factorization.

4473721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33663.

The product of its digits is 4704, while the sum is 28.

The square root of 4473721 is about 2115.1172544330. The cubic root of 4473721 is about 164.7743594641.

The spelling of 4473721 in words is "four million, four hundred seventy-three thousand, seven hundred twenty-one".